Sf6 Circuit Breaker In Substation. Most of air circuit breakers are use in indoor type substations. Sulfur hexafluoride circuit breakers protect electrical power stations and distribution systems by interrupting electric currents when tripped by a protective relay.
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Most of air circuit breakers are use in indoor type substations. Vacuum is used for switchgear applications and for some outdoor breakers generally 38 kv class and below. 4 26 2012 4 20 50 pm.
Single interruption sf6 circuit breaker is suitable for 245kv systems.
Sf6 is a colorless nontoxic gas with good thermal conductivity and density approximately five times that of air. An sf6 circuit breaker is a type of circuit breaker in which sulphur hexafluoride gas or sf 6 gas is used as the arc quinching medium known as an sf6 circuit breaker. The circuit breaker in which the contacts open and close in the sf6 medium is called the sf6 circuit breaker. Sf 6 sulphur hexafluoride gas has excellent dielectric arc quenching chemical and other physical properties which have proved its superiority over other arc quenching mediums such as oil or air.
